Assignee
Inventors
- Takashi Nishii (2 patents)
- Masao Mikami (8 patents)
- Hajime Ishii (26 patents)
- Kenichi Ide (18 patents)
- Toshio Iwanami (10 patents)
- Shirou Osada (1 patents)
- Satoshi Murata (103 patents)
- Sadakazu Masuda (11 patents)
US Patent 6722174 · Granted Apr 20, 2004